FT-23R
MK
OPERATING MANUAL
YAESU MUSEN CO., LTD.
1-20-2 Shimomaruko, Ota-Ku, Tokyo 146-8649, Japan
YAESU U.S.A.
17210 Edwards Rd., Cerritos, CA 90703, U.S.A.
YAESU EUROPE B.V.
Snipweg 3, 1118DN Schiphol, The Netherlands
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Trading Estate
Winchester, Hampshire, SO23 0LB, U.K.
YAESU GERMANY GmbH
Am Kronberger Hang 2, D-65824 Schwalbach, Germany
YAESU HK LTD.
11th Floor Tsim Sha Tsui Centre, 66 Mody Rd.,
Tsim Sha Tsui East, Kowloon, Hong Kong
Ⅱ
Contents
Specifications..................................................................................................... 2
General.......................................................................................................... 2
Receiver ........................................................................................................ 2
Transmitter .................................................................................................... 2
Accessories & Options List................................................................................3
Controls & Connections .................................................................................... 4
Top Panel ...................................................................................................... 4
Side Panel...................................................................................................... 5
Front Panel .................................................................................................... 6
Accessories......................................................................................................... 7
Battery Packs, Battery Case & Chargers ......................................................... 7
NC-29 5-hour Quick Charger ......................................................................... 7
PA-6 Mobile DC Adapter/Charger for FNB-14 and FNB-17 ........................... 8
Dry-Cell Battery Case .................................................................................... 8
Battery Removal & Replacement.................................................................... 9
MH-32
Antenna Considerrations .............................................................................. 10
Operation ........................................................................................................ 11
Preliminary Operating Information ............................................................... 11
Squelch Setup .............................................................................................. 11
Transmitting ................................................................................................ 12
Frequency & Step Selection ......................................................................... 13
Memory Storage & Recall ............................................................................ 14
Repeater Operation ...................................................................................... 15
Scanning...................................................................................................... 16
Priority Channel Monitoring......................................................................... 17
Tone Squelch Operation ............................................................................... 18
& MH-34
A2B
Speaker/Microphone............................................. 10
C2B
In Case of Problems......................................................................................... 19
Getting the Most from Your Batteries ............................................................ 20
Memory Cloning ............................................................................................. 21
Installation of Option ...................................................................................... 22
FTS-12 Tone Squelch Unit Installation ......................................................... 22
Yaesu FT-23R MK
Ⅱ
2m Hand-Held
Cpu-Controlled FM Transceiver
The FT-23R MKⅡ is an ultra compact FM hand-held for the 2m amateur band that offers
the convenience of very small size and light weight combined with the features and flexibility of performance only possible with microprocessor control. A variety of rechargeable battery packs and dry cell cases are available, providing up to five watts of RF power
output.
The transceiver is housed entirely in zinc and aluminum die-cast alloys, and battery cases
are constructed of thick high-impact polycarbonate plastic, for professional-grade ruggedness required in the most demanding applications. Rubber gasket seals around all external
controls and connectors keep out dust and rain or spray, assuring years of reliable operation even in harsh environments.
Standard microprocessor-controlled features included ten memory channels which each
store repeater shifts, CTCSS (Continuous Tone Controlled Squelch System) tone frequencies and tone encode/decode selections*; busy channel and priority channel scanning; 1MHz
up/down stepping; plus a top panel rotary dial for memory and frequency selection. Seven
of the memories can also be programmed for non-standard repeater shifts. The LCD (Liquid Crystal Display) shows six frequency digits, memory channel selection, and CTCSS
tone frequency during tone selection*, and includes a bargraph S/PO meter.
Please read this manual carefully to gain a clear understanding of the features of the FT-
23R MKⅡ.
: CTCSS tone features require the FTS-12 Tone Squelch Unit, optional in some countries.
*
FT-23R MKII OPERATING MANUAL 1
Specifications
General
Frequency coverage (MHz): 144 to 147.9995 (versions A, C & E)
144 to 145.9875 (versions B & D)
Channel steps: 5 & 10 kHz (vers. A/D/E) or 12.5 & 25 kHz (vers. B/C)
Standard repeater shift: 600 kHz
Emission type: G3E
Supply voltage: 6.0 to 15.0 VDC
Current consumption: 19 mA Stby (Save ON); 150 mA Rceive;
1500 mA Transmit (5W); 900 mA Transmit (2W)
Antenna (BNC jack): YHA-16 rubber flex antenna
Case size (WHD): 55 x 188 x 32mm w/FNB-11H
55 x 155 x 32mm w/FNB-12/-14
55 x 133 x 32mm w/FNB-/FBA-17
Weight (approx): 430g w/FNB-17, 550g w/FNB-11H
Receiver
Circuit type: Double-conversion superheterodyne
Sensitivity: better than 0.25 µV for 12dB SINAD
Adjacent channel selectivity: better than 60dB
Intermodulation: better than 65dB
Audio output: 0.4W @8 W for 5% THD (with 12V supply)
Transmitter
Power output: 5W @12V, 2.5W @7.2V or FBA-17
Frequency stability: better than 10 ppm
Modulation system: variable reactance
Maximum deviation: ±5 kHz
FM Noise: better than –40dB @ 1 kHz
Spurious emissions: better than 60dB below carrier
Audio distortion: less than 5% @ 1 kHz, w/3 kHz deviation
Microphone type: 2-kΩ condenser
Burst tone: 1750 Hz (except version A)
Specifications may be subject to change without notice or obligation.
FT-23R MKII OPERATING MANUAL2
Accessories & Options List
FNB-11H 12V, 700mAh Ni-Cd Battery Pack
FNB-12 12V, 500mAh Ni-Cd Battery Pack
FNB-14 7.2V, 1000mAh Ni-Cd Battery Pack
FNB-17 7.2V, 600mAh Ni-Cd Battery Pack
FBA-17 Dry cell Battery Case for 6 AA-size cells
NC-34B 117 VAC Compact Wall Charger for FNB-14
NC-34C 220-234 VAC Compact Wall Charger for FNB-14
NC-65B 117 VAC Compact Wall Charger for FNB
NC-65C 220-234 VAC Compact Wall Charger for FNB
NC-65F 220 VAC w/Argentine plug Compact Wall Charger for FNB
NC-65U 220-234 VAC w/UK plug Compact Wall Charger for FNB
NC-29 Desktop Quick Charger for all above FNB packs
NC-50 Dual-Slot Rapid Charger
CA-7 Charger Sleeve (required w/NC-50)
PA-6 Mobile DC Adapter/Charger for 7.2 V packs (FNB-14/-17)
MH-32
MH-34
MH-37
YHA-16 Rubber flex antenna
FTS-12 CTCSS Subaudible Tone Squelch Unit
MMB-32A Mobile Hanger Bracket
External Hand Speaker/Microphone
A2B
External Hand Speaker/Microphone
C2B
Earpiece/Microphone
B2B
Availability of accessories may vary: some accessories are supplied asstandard per local
regulations and requirements, others may be unavailable in some regions. Check with
your Yaesu dealer for additions to the above list.
FT-23R MKII OPERATING MANUAL 3
Controls & Connectors
TOP PANEL
EAR Jack
•
This 2-conductor mini phone jack provides
audio output for an external earphone or the
optional speaker/microphone, while disabling
the internal loudspeaker.
MIC Jack
‚
This 2-contact micro-mini phone jack accepts
microphone input from a speaker/microphone,
or other external source, while disabling the
internal microphone.
LOW Power Output Button
ƒ
Keep this button depressed whenever low power is sufficient for communications.
Low power is 200 to 500 mW, depending on battery voltage.
DIAL Rotary Selector
„
This 20-position switch tunes the operating (or CTCSS tone) frequency or selects
memory channels, according to the function selected by front panel keys. This knob
duplicates the functions of the
VOL/OFF Contral
…
This control adjusts the volume of the receiver. Turn it fully counterclockwise (into the
click stop) position to turn the transceiver off.
[p]
and
[q]
keys for convenience.
SQL Control
†
This knob sets the threshold level at which received signals (or noise) open the squelch.
For prolonged battery life and squelch sensitivity, set this control just to the point
where noise is silenced (and the BUSY/TX indicator on the front panel is off) when
the channel is clear.
ANTENNA Jack
‡
This BNC jack accepts the supplied YHA-16 rubber flex antenna, or any other antenna designed to provide 50-ohm impedance on the 2-meter band.
FT-23R MKII OPERATING MANUAL4
Controls & Connectors
SIDE PANEL
Monitor (Burst) Button
•
In the US version, this button open the noise squelch momentarily without disturbing the setting of the SQL control. In the European version, this button activates the 1750Hz burst tone generator when pressed together with the PTT
button.
PTT Button
‚
Press and hold this (Push-to-Talk) button to transmit. The
BUSY/TX indicator glows red while transmitting.
Unlock Lever
ƒ
Slide this mechanical lever upward to release the battery
for removal.
FT-23R MKII OPERATING MANUAL 5
Controls & Connectors
FRONT PANEL
BUSY/TX Indicator Lamp
•
This LED indicator glows green when
the noise squelch is open during reception, and red when transmitting.
Keypad
‚
These eight keys select the various operating features of the transceiver during reception. A beep will sound whenever one of the keys is pressed. The labels on the faces of the keys indicate
their primary functions, while the labels
above six of the keys indicate alternate
functions, which are activated by pressing the [F] key first, and then the other
key within four seconds. In this manual,
we will refer to these functions by the
alternate label (above the key), prefixed
by “[F] + ” to remind you to press [F
first. For example, “[F] +
that you should press the [F] key, followed by the
onds. All key functions aredescribed in
detail in Operation chapter, and summarized on the “FT-23R MKI I Operator’s Quick Reference Card.”
[q]
[q]
” indicates
key within four sec-
]
LCD (Liquid Crystal Display)
ƒ
The display shows the selected operating conditions as indicated in the following diagram:
FT-23R MKII OPERATING MANUAL6
Accessories
BATTERY PACKS, BATTERY CASE & CHARGERS
The FT-23R MKⅡrequires the FNB-11H or FNB-12 twelve-volt rechargeable Ni-Cd battery pack for the full 5-watt power output. However, where slightly lower power output
(2.5 watts) is practical, the dry-cell battery case and the FNB-14 and FNB-17 Ni-Cd
packs offer smaller size, lighter weight or extended battery charger life. Any of the Ni-Cd
packs may be recharged either while attached to the transceiver or separately. Each Ni-Cd
pack should be fully charged before it is used with the transceiver for the first time.
Three types of chargers are available: 15-hour compact chargers, the NC-29 1-hour Desktop Quick Charger and PA-6 Mobile Adapter/Charger.
A different compact charger is required for each model pack:
Ni-Cd Pack Voltage Capacity Compact Charger
FNB-11H 12V 700 mAh NC-65
FNB-12 12V 500 mAh NC-65
FNB-14 7.2V 1000 mAh NC-34
FNB-17 7.2V 600 mAh NC-65
Make certain that you use the correct compact charger for each pack. The NC-34 compact
charger is available with a “B” suffix for operation from 117-VAC mains, or with a “C ”
suffix for operation from 220 ~ 234VAC mains. The NC-65 compact charger is available
with a “B” suffix for operation from 117-VAC mains, with a “C” suffix for operation from
220 ~ 234VAC mains, with a “F” suffix for operation from 220VAC w/Argentine plug
mains, or with a “U” suffix for operation from 220 ~ 234VAC w/UK plug mains.
NC-29 5-HOUR QUICK CHARGER
The NC-29 is a universal AC mains battery charger with quick and trickle charging modes
for all of the FNB series Ni-Cd packs listed above. It comes wired from the mains voltage
in the area sold. The quick mode is automatically selected initially, to bring the battery
pack up to full charge as fast as safely possible using an internal timer. Three LED indicators show elapsed charging time after 1, 3 and 5 hours. The charger then reverts to the
trickle mode (green indicator), to prevent self-discharge. The quick mode recharges a completely discharged battery in about 5 hours, depending on temperature.
CAUTION !
When using the NC-29, do not switch the charger off and on or remove and then
replace a battery from the charger while it is charging, as this will reset the timer
and may then overcharge the battery.
FT-23R MKII OPERATING MANUAL 7
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